Interventional Neuroradiology

It's a minimally invasive approach in the treatment of vascular diseases of the central nervous system. It is a medical specialty that uses radiologic images to guide catheters and other tiny instruments through blood vessels and other pathways of the body to treat a wide variety of neurological conditions that in the past required surgery.

Treatments include:
  • Stroke treatment with clot-busting drugs that go directly to the site of the blockage
  • Stroke treatment also includes the removal of the clot causing the stroke, if it is big enough
  • Aneurysm therapy by inserting platinum coils into the aneurysm bulge to prevent clotting and rupture
  • Spinal treatments by injecting cement into a fractured vertebra in order to reinforce the bone
  • Nonsurgical and Surgical Carotid Artery Interventions to treat the source of the stroke
    • Carotid Endarterectomy
      • Carotid endarterectomy is the surgical removal of plaque and/or clot build-up from the carotid artery in the neck, improving or restoring the flow of oxygen-rich blood to the brain. It can help reduce the risk of stroke in people with carotid artery disease, particularly in persons with a carotid artery narrowing of 80 percent or more. Once the plaque has been removed, a stent (a mesh wire tube) may be placed inside the artery to reduce the risk of re-narrowing. It has also been proven that for certain patients with minor strokes or TIAs, carotid endarterectomy is highly beneficial in preventing future strokes. It is also beneficial for some patients with blockage of the carotid arteries who have not had previous symptoms. At Renown our mortality- and complication-rate related to this surgical procedure is nearly zero. Our multidisciplinary, team-based approach to patient care has allowed us to optimize our patient outcomes for our community; there have been 100+ carotid endarterectomies surgeries within the past year alone.
    • Carotid Artery Stenting(CAS)
      • Carotid Artery Stenting is a minimally invasive procedure where a hollow mesh tube is guided to the narrowing in the Carotid Artery and placed with balloon guidance to open the narrowing. Patients who have this procedure take oral blood thinners for a few months after the procedure to ensure the mesh tube stays clear of calcium and blood clots.


    Biplane Angiography

    With this technology, interventional neuroradiologists can see enhanced views of the brain in three dimensions.

    They then snake a catheter through a major artery in the leg or arm directly to the stroke site in the brain where a clot-busting drug can be delivered in the case of an ischemic stroke. And for a hemorrhagic stroke, coils can be placed to stop the bleeding.

    MERCI Clot Retriever

    For stroke patients that are not candidates for the clot-busting drug t-PA, interventional neuroradiologist can use biplane angiography to guide the MERCI (Mechanical Embolus Removal in Cerebral Ischemia) Clot Retriever — a tiny corkscrew-shaped device — inside a catheter through the blood vessel to the site of the blockage where it can be used to grab the clot for removal.


    The Penumbra System is available for stroke patients who are not candidates for the clot-busting drug t-PA. Interventional neuroradiologists can use biplane angiography to guide the Penumbra to a blood clot in the brain. The system removes the blockage using a microcatheter and unique separator system to restore circulation within the brain.